Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Types of Friction Problems

Types of Friction Problems

Friction is an essential concept in physics, engineering, and everyday life. It is the force that opposes the relative motion or tendency of such motion between two surfaces in contact. One of the most common types of friction encountered in various applications is dry friction. Dry friction problems can be broadly categorized into three types, each with unique characteristics and challenges.
The first type of dry friction problem involves situations where there is no apparent impending motion.

Frictional Force

Frictional Force

When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...

Phase Diagram

Phase Diagram

The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).

Phase Diagram

Phase Diagram

A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. It shows the boundaries between solid, liquid, and gas phases and the conditions at which these phases coexist in equilibrium. An area in a phase diagram represents a single phase, whereas lines or phase boundaries represent the equilibrium between two phases.In the phase diagram of water, the boundary line between the solid and liquid states illustrates...

Static and Kinetic Frictional Force

Static and Kinetic Frictional Force

One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...

Phase Diagrams

Phase Diagrams

A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Synthesis of Hierarchical ZSM-5 Zeolite Mesocrystals with Controllable Macropores toward Enhanced Catalytic Performance.

Inorganic chemistry·2026

Same author

The Dual Role of Natural Peptides in Cancer Therapy: Anticancer and Immunomodulatory Perspectives.

Oncology research·2026

Same author

Emergent domain segregation in self-interacting polymers explains chromosome 3D conformations in single human cells.

Physical review. E·2026

Same author

Physics-Based Modeling of Sparse Single-Cell Hi-C Uncovers Structural and Epigenetic Variability.

International journal of molecular sciences·2026

Same author

HKDC1 contributes to aberrant lysosome-mitochondria contact in Niemann-Pick disease type C.

bioRxiv : the preprint server for biology·2026

Same author

Spectroscopic and computational characterization of the nucleopeptide WWT reveals supramolecular organization, selective biomolecular interactions, and potential regenerative relevance.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026

Search research articles

Related Experiment Video

Updated: May 26, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

Jamming phase diagram for frictional particles.

Massimo Pica Ciamarra¹, Raffaele Pastore, Mario Nicodemi

¹CNR-SPIN, Dipartimento di Scienze Fisiche, Universitá di Napoli Federico II, Via Cintia, I-80126 Napoli, Italy. massimo.picaciamarra@spin.cnr.it

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|December 21, 2011

Summary

Researchers explored the jamming transition in frictional particles using simulations. They discovered new regimes and found jammed states are not fragile, revealing a sudden jamming phenomenon linked to impeded dilatancy.

More Related Videos

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

Published on: November 6, 2021

Related Experiment Videos

Last Updated: May 26, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

Published on: November 6, 2021

Area of Science:

Physics
Materials Science
Computational Science

Background:

Understanding the jamming transition in frictional particulate systems is crucial for various scientific and engineering applications.
Previous studies speculated that jammed states might be fragile, requiring further investigation.

Purpose of the Study:

To investigate the jamming transition of frictional particulate systems.
To identify and characterize new regimes within the jamming phase diagram.
To examine the mechanical and structural properties of jammed states.

Main Methods:

Utilizing discrete element simulations to model particulate systems.
Analyzing the jamming phase diagram with axes for density, shear stress, and friction coefficient.

Main Results:

Discovery of new jamming regimes not previously described.
Characterization of distinct mechanical and structural properties in jammed states.
Identification of a regime with diverging time scales, exhibiting sudden jamming, linked to impeded dilatancy.

Conclusions:

Jammed states in frictional particulate systems are not fragile as previously speculated.
A novel regime characterized by impeded dilatancy leads to sudden jamming transitions.
The findings provide a more comprehensive understanding of jamming phenomena in particulate matter.